Where Do Screws Go On A Metal Roof

However you have to ensure the rubber washers have enough space to move around.

Where do screws go on a metal roof.

These are where to screw down corrugated metal roofing. Metal roofs can be as much as two or three times more expensive than other roofing materials. Most manufacturers drill holes through the corrugated metal roofing sheets. As the screws are driven the washer presses against the metal roofing to form a water proof seal.

Hidden screws are the proper way to screw down metal roofs. Metal roofing installation requires special metal roof screws that are equipped with a metal washer with a neoprene seat on the base of the washer. The screw can flex within this space reducing the shear load carrying capacity of the sheathing system. Metal roofs can be noisy especially during a heavy rain or hailstorm.

The screws that are used to attach the metal roofing are self drilling screws. Align the first metal roofing panel so that it overlaps the edging by 1 2 to 3 4 of an inch and is square to the roof line. Therefore you do not need to pre drill the holes. Be sure the larger edge is laid so that the small edge of the next panel will overlap it.

Today the fasteners of choice for corrugated roofing are gasketed hex head screws with a metal and rubber washer below the head. Install the roofing screws vertically along each rib in the panel. However when screws are exposed to the weather in central texas they can rust and the washers can crack leading to leaks that can damage not only the roofing but also the structure of the building. This means that the screw will drill its own hole through the metal roofing panel and into the metal or wood substrate.

Corrugated roof panels and other exposed fastener metal roofs are usually held together with screws every 18 inches or 2 feet. While the life of a metal roof is much longer investing in a metal roof only makes sense if you plan to stay in your home long enough to enjoy the cost benefits. Hidden screws exposed fastener installation is easier and less expensive.